content: /* ===========================================================
   * JFreeChart : a free chart library for the Java(tm) platform
   * ===========================================================
   *
   * (C) Copyright 2000-2012, by Object Refinery Limited and Contributors.
   *
   * Project Info:  http://www.jfree.org/jfreechart/index.html
   *
   * This library is free software; you can redistribute it and/or modify it
   * under the terms of the GNU Lesser General Public License as published by
   * the Free Software Foundation; either version 2.1 of the License, or
   * (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful, but
   * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
   * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
   * License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
   * USA.
   *
   * [Oracle and Java are registered trademarks of Oracle and/or its affiliates. 
   * Other names may be trademarks of their respective owners.]
   *
   * --------------------
   * ChartMouseEvent.java
   * --------------------
   * (C) Copyright 2002-2008, by Object Refinery Limited and Contributors.
   *
   * Original Author:  David Gilbert (for Object Refinery Limited);
   * Contributor(s):   Alex Weber;
   *
   * Changes
   * -------
   * 27-May-2002 : Version 1, incorporating code and ideas by Alex Weber (DG);
   * 13-Jun-2002 : Added Javadoc comments (DG);
   * 26-Sep-2002 : Fixed errors reported by Checkstyle (DG);
   * 05-Nov-2002 : Added a reference to the source chart (DG);
   * 13-Jul-2004 : Now extends EventObject and implements Serializable (DG);
   * ------------- JFREECHART 1.0.x ---------------------------------------------
   * 24-May-2007 : Updated API docs (DG);
   *
   */
  
  package org.jfree.chart;
  
  import java.awt.event.MouseEvent;
  import java.io.Serializable;
  import java.util.EventObject;
  
  import org.jfree.chart.entity.ChartEntity;
  
  /**
   * A mouse event for a chart that is displayed in a {@link ChartPanel}.
   *
   * @see ChartMouseListener
   */
  public class ChartMouseEvent extends EventObject implements Serializable {
  
      /** For serialization. */
      private static final long serialVersionUID = -682393837314562149L;
  
      /** The chart that the mouse event relates to. */
      private JFreeChart chart;
  
      /** The Java mouse event that triggered this event. */
      private MouseEvent trigger;
  
      /** The chart entity (if any). */
      private ChartEntity entity;
  
      /**
       * Constructs a new event.
       *
       * @param chart  the source chart (<code>null</code> not permitted).
       * @param trigger  the mouse event that triggered this event
       *                 (<code>null</code> not permitted).
       * @param entity  the chart entity (if any) under the mouse point
       *                (<code>null</code> permitted).
       */
      public ChartMouseEvent(JFreeChart chart, MouseEvent trigger,
                             ChartEntity entity) {
          super(chart);
          this.chart = chart;
          this.trigger = trigger;
          this.entity = entity;
      }
  
      /**
       * Returns the chart that the mouse event relates to.
       *
       * @return The chart (never <code>null</code>).
       */
      public JFreeChart getChart() {
          return this.chart;
      }
  
      /**
       * Returns the mouse event that triggered this event.
       *
       * @return The event (never <code>null</code>).
       */
      public MouseEvent getTrigger() {
          return this.trigger;
      }
  
      /**
       * Returns the chart entity (if any) under the mouse point.
       *
       * @return The chart entity (possibly <code>null</code>).
       */
      public ChartEntity getEntity() {
          return this.entity;
      }
  
  }
  